Improvement in metal-rolling mills



3 Sheets-Sheet L w. R. JENKINS, Jr.

Metal Rolling-Mill.

Patented June18,1878.

qt wi 3' Sheets-Sheet 2.

W. R. JENKINS, Jr". Metal Rolling-Mill.

Patented Jun18, 18.78.

I III W. R. JEN J MetalRollin ill.

No. 204,976.' Patented .lune18,'l878.

UNITED STATES PATENT OFFICE.

WILLIAM R. JENKINS, JR, OF BELLEFONTE, PENNSYLVANIA.

IMPROVEMENT lN METAL-ROLLING MILLS.

Specification forming part of Letters Patent No. 204,976, dated June 18,1878 application filed October 13, 1877.

To all whom it may concern.-

Be it known that I, WILLIAM R. JENKINS,

J r., of Bellefonte, in the county of Centre and State of Pennsylvania,have invented a new and useful Improvement in Con tinuous Rolling- Mills5 and I do hereby declare that the following is a full and exactdescription of the same, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon.

The object I have in view is the construction of a continuousrolling-mill, in which all the rolls shall be arranged in a horizontalposition without intermediate twisting-guides, and thereby thedisadvantages connected with rolls Vertically arranged, ortwisting-guides, shall be avoided, whereby the power applied may be lesscomplex and expensive, and the whole mill be simpler and cheaper; and myinvention therein consists in constructing the train of rolls withgrooves or passes, each with a longer and a shorter axis, arrangedalternately and, further, in the arrangement of the pairs ofhorizontal-rolls so that the same will present to the lIOIl passingbetween them the shorter axes of the grooves or passes alternately atright angles, all as'fully hereinafter explained.

In order that those skilled inthe art may know how to make and use.rny'rolling-mill, I nowproceed to describethe same, having reference tothe accompanying drawings, in which Figure 1 is a perspective elevationof my rolling-mill; Fig. 2, a front'elevation of one pair of rolls; Fig.3, a similar elevation of the next pair of rolls; Figs. 4., 5, 6,central vertical cross-sections of several pairs of rolls; Fig. 7, aside elevation of the rolling-mill on the gear side Fig. 8, a verticalsection through the housings on the same side, and Fig. 9 a modificationof a pair of rolls.

Similar letters denote corresponding parts.

In the drawings, A represents the bed-plate, preferably cast in onepiece, long enough to receive all the housings, and of a proper widthfor the rolls designed to be mounted in the housings. This bed-plate iscast with crossbearings 13, at proper distances to support the housings,in each of which bearings is a locking-groove, a, of a T-shaped form,reversed,

extending the entire length of the bearing. Upon these bearings thehousings O O are mounted, having feet D projecting before and behind,with dependent flanges b 12. These housings are mountedv upon thebearings named by placing the feet so that the flanges b I; extendbelow. the upper surfaces of the bearings, and are secured in placethereon by bolts 0, having heads 0, adapted to fit into and move in thelongitudinal portion of the groove a, while the body 0 of the boltextends up through the foot, and is supplied with a nut or equivalentdevice, so that the housings may be readily adjusted any desireddistance from each other for different sizes of rolls. Between the sidesof the housings are the usual carriages d d and riders e.

The cap E is made in usual form, so as to be removed in order to takeout the rolls, and has the ordinary top screw F, for adjusting thevertical position of the rolls, and the usual stay-rods G are employed.

Each of these housings, which may be as numerous as needed, usually fromeight to sixteen in numbe'njcarries a pair of rolls, H 11 the first thelower, the second the upper roll. Each roll has in that portionof itwhich is between the housings a large portion, f, and a smaller portion,9. The larger. portion terminates toward the center of the roll in ashoulder, h, sloping outwardly and downwardly, but slightly to a point,t, and from that point sloping outwardly and downwardly at an obtuseangle to a point, j, at which pointflthe small portion'g of the'roll isreached. The roll H is constructed precisely like the'roll H, but isarranged with its large portion f directly above the small portion 9 ofthe roll H, and its small portion g directly above the large portion fof the same roll, and the conti guous parts nearly touching. It follows,then, that between the shoulders of the two rolls,

placed as above described, there is the groove or pass I, which inFigs.2 and3 is of a lozenge or diamond form, with a long axis, 70, and ashort axis, is. The rolls in the next housing, 0 G, are arranged in areverse order to the rolls in the first housing, 0 O, which are intendedto be placed at the head or front of the mill-as, for instance, if inthe first housing, 0 (l, the larger portion of the lower roll is to theright, and the larger portion of the upper roll to theleft; in the nexthousing, 0 G, the larger portion of the lower roll is to the left, andthe larger portion of the upper roll to the right.

It follows that, the rolls being precisely alike in construction, thegroove or pass 1 between the rolls H H in the second housings isprecisely like the groove or pass I in form, only a little smaller,except that in the groove or pass I the shorter axis 70 is at rightangles to the shorter axis is, and the longer axis 79 is at right anglesto the longer axis k. It follows, then, that a bar of iron inserted inthe groove or pass I is compressed most violently upon the line of theshorter axis; but when the same bar enters the groove or pass I it iscompressed upon what has become the line of the longer axis, and so onalternately through the succession of the pairs of rolls. The iron isfirst compressed in one direction, and then in the opposite direction,and yet without turning or twisting the bar.

It may be observed here that suitable guides may be employed between thepairs of rolls and between the housings.

It will be observed in Fig. 5 that the grooves or passes are of an ovalor flattened annular form; and it is apparent that a great variety offorms of the grooves or passes come within the spirit of my invention,if such formshai'e a longer and a shorter axis.

In the arrangement of my rolls I prefer that an oval form, as in Fig. 5,should be succeeded by a lozenge or diamond form, as in Fig. 6. At thelast or finishing pair of rolls the groove or pass may have a square orcircular form, or, indeed, any form which it is intended that thefinished article shall assume.

In operating my rolling-mill the usual trains of gear may be employed;but as all the rolls are arranged horizontally it is evident that thegear may be simple, cheap, and cheaply operated, as compared with gearused to drive continuous mills, where the rolls are placed alternatelyin a horizontal and in a vertical position, and where, consequently, achange of diflection of power is required at each pair of ro s.

It is apparent that additional grooves may be employed in these 'rolls,by increasing the number of larger and smaller parts in each roll,without departing from the spirit of my invention.

The principal advantage of the peculiar bedplate is, that it gives astronger support longitudin ally, and greater strength to the bearingswhich support the housings; of the peculiar bearings, that they affordby their grooves a more secure and convenient adjustable means ofsecuring the housings; of the peculiar form of the rolls, that they givegreater strength of resistance in the direction of greater pressure; ofthe grooves or passes, that they give a form or shape to the iron whichreduces it in size without forming a fin upon it; in the alternatedisposition of long and short axes, that the iron is compressed withoutdestruction of its fiber; in the arrangement of all the rollshorizontally, that the mill is thereby rendered more simple and cheap inconstruction, and more simply and cheaply operated in, the whole mill,being a continuous mill, that iron can be rolled of a greater length,more rapidly, and with less expense of labor than ,where it is necessaryto roll back and forth. There are other advantages of a less prominentcharacter, which will be apparent upon inspection to those skilled inthe art.

Having thus described myirolling-mill and enumerated some of itsadvantages, what I claim as new therein, and of my own invention, isi 1.In a continuous rolling-mill, the train of rolls H H H H constructed asdescribed, provided with grooves or passes I, each with a longer and ashorter axis, arranged alternately, substantially as described.

2. In a continuous rolling-mill, the arrangement of the pairs of rolls,in a train of rolls placed horizontally, so that the same shall presentto the iron passing between them the shorter axes of the grooves orpasses alternately at right angles, substantially as described.

This specification signed and witnessed this 3d day of October, 1877.

WILLIAM R. JENKINS, JR. Witnesses:

L. W. SEELY, P. D. DYER.

